铸态Ti-Zr-Ni准晶基合金的室温力学性能
Release Time:2019-03-10 Hits:
Indexed by: Journal Article
Date of Publication: 2004-01-01
Journal: 金属学报
Included Journals: Scopus、CSCD、ISTIC、PKU、SCIE
Volume: 40
Issue: 1
Page Number: 62-66
ISSN: 0412-1961
Key Words: 准晶;Ti-Zr-Ni合金;准解理断裂
Abstract: 用吸铸法制备出含Ti(Zr)固溶体韧性相的Ti-Zr-Ni准晶合金棒,通过维氏显微硬度测定和单向压缩实验等方法研究了该新型合金的室温力学性能和断裂行为.结果表明:Ti-Zr-Ni准晶基复相(α-Ti(Zr)+I)合金力学性能良好,维氏显微硬度值接近5.5 GPa,断裂强度达到1000 MPa,Young's模量值23-36 GPa.其中,Ti60Zr25Ni15合金的室温弹性应变可达4.2%,是Al基准晶合金的4倍.但其室温单向压缩时的断裂方式仍为准解理断裂,属脆性断裂.